19077681

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 30604288

約数和(自身を除く): 11526607

約数列:

[1, 3, 7, 21, 37, 43, 111, 129, 259, 301, 571, 777, 903, 1591, 1713, 3997, 4773, 11137, 11991, 21127, 24553, 33411, 63381, 73659, 147889, 171871, 443667, 515613, 908461, 2725383, 6359227, 19077681]

約数ペア:

[(1, 19077681), (3, 6359227), (7, 2725383), (21, 908461), (37, 515613), (43, 443667), (111, 171871), (129, 147889), (259, 73659), (301, 63381), (571, 33411), (777, 24553), (903, 21127), (1591, 11991), (1713, 11137), (3997, 4773)]